Wikihack
Advertisement

Trolls are a class of monster in NetHack. They are notable because the corpses of dead trolls will revive (as do the endgame Riders). For that reason, trolls are one of the more annoying monsters. Trolls can also make good use out of polearms - the range they can hit things with a polearm in hand is equal to that of a character whose skill level in polearms is Skilled.

The troll, T, is also the least powerful monster of this class. Other types of troll include ice trolls, rock trolls, water trolls and Olog-hai.

Strategy for troll removal

Generally speaking, for well armed characters, the problem with trolls is not so much to kill them as to get rid of them without having them auto-reviving. There are a large number of ways to kill a troll permanently, many of which fall into the general category of putting the corpse inside something:

  • Eat the corpse. This is a readily available option as long as nothing nearby requires your immediate response and the character is not satiated, but the troll can revive while being eaten. Note that a troll can revive if only partially eaten.
  • Let a pet eat the corpse. This has the advantage that it will disappear as soon as the pet starts to eat, though not everyone has a carnivorous pet.
  • Tin the corpse. Easiest option for those with a tinning kit.
  • Lock the corpse in a container. Useful for trolls generated in throne rooms, though they may revive while being carried to their destination.
  • Polymorph the troll and kill the creature.
  • Throw the corpse into lava or water (if it isn't a water troll) and it will drown as soon as it revives.
  • Polymorph the corpse.
  • Sacrifice the corpse.
  • Just keep killing the troll, and eventually it will fail to revive (approximately a 25% chance each time you kill it).
  • Kill the troll with a level-draining weapon; it will still revive, but will be easy to kill again when it does.
  • Completely fill the level with monsters so that the troll has nowhere to revive.
  • Find or dig a pit, place the corpse in, and push in a boulder to bury it.
  • Stone the live troll with a cockatrice corpse. If there is a live cockatrice nearby, conflict can also (sometimes) induce the cockatrice to stone the troll.
  • Lure the troll to the Rogue level, where monsters don't leave corpses, and kill it there.
  • Disintegrate the troll by standing between it and a black dragon, or just polymorph into a black dragon and administer a disintegration ray at it.
  • Put the corpse in a cursed bag of holding and repeatedly #loot the bag until it disappears.

Trolls as pets

While not as strong as some other tamable creatures, higher level trolls are still reasonably strong, can make use of some weapons, and can auto-revive when killed (even though they do not always revive tame, the chance is small for them to revive hostile as long as you do not abuse them or kill them yourself accidentally). While they are not exactly so powerful that they're worth going out of your way to tame, a tame troll is still worth consider keeping.

Messages

If the troll revives and you can see it, you will receive the message "The [troll type] rises from the dead!" As a special case, if the troll revives while you are eating it, the message changes to "The bite covered [troll type] rises from the dead!" Although it would be a simple matter of programming to keep the description, the "bite covered" part is not referred to again, for example in subsequent attack or death messages.

Individual information

Troll

The weakest monster in the Troll monster class. It has no special abilities beyond auto revivification, and is often generated in throne rooms.

Ice Troll

Ice Trolls are immune to ice and part of its attacks are cold-attributed and therefore preventable with Cold Resistance. It hits slightly harder than regular Trolls if its cold attack isn't resisted. They have a slightly lower AC and some MR.

Rock Troll

Rock Trolls are basically more powerful versions of your standard everyday Trolls. They hit slightly harder than Trolls and Ice Trolls, but have no remarkable attribute otherwise outside auto revivification. They have lower AC than Ice Trolls, but no MR.

Water Troll

Water Trolls have higher MR than other trolls, but its AC is only on par with regular Trolls. They don't hit as hard as Rock Trolls, but they can swim, so dumping their corpse in water isn't effective at getting rid of them.

Olog-hai

Olog-hais are the most powerful type of trolls, having lower AC than all other trolls (no MR, though), and hit as hard as Rock Trolls. They have no special attributes beyond auto revivification.


Advertisement